US3761501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoroalkyl cyanates
Assignee: Honeywell International Inc
•
Filing: 1971-06-02
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Granted: 1973-09-25
•
Expires: 1991-06-02
Abstract
Abstract Tertiary perfluoroalkyl cyanates are prepared by reacting the corresponding tertiary perfluoroalkoxide with cyanogen chloride or cyanogen bromide. The cyanates are novel compounds useful as intermediates in the preparation of low surface energy compounds useful as repellent coatings.
Inventors
- 👤 C Woolf
- 👤 R Dear
- 👤 D Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:25
CPC Classifications
C; C07; C07C; C07C261/00; C07C261/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
The cyanate of claim 1 wherein the cyanate is perfluoro-t-butyl cyanate.
Claim 2
Dependent Claim
11 words
The cyanate of claim 1 wherein the cyanate is perfluoro-2,4-dimethyl-2-butyl cyanate.
Claim 3
Dependent Claim
7 words
A process for preparing a perfluoroalkyl cyanate
Claim 4
Dependent Claim
11 words
The process of claim 4 wherein M is sodium or potassium.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |